The cards Question What are the three states of matter? Tap to flip Answer The solid state, the liquid state and the gas state Question What does the particle model explain? Tap to flip Answer The physical properties of substances, by describing how their particles are arranged and move Question Why can a substance in the gas state be compressed? Tap to flip Answer There is empty space between its particles Question Why can a substance in the solid or liquid state not be compressed? Tap to flip Answer Its particles are already touching Question Why does a substance in the liquid or gas state have no fixed shape? Tap to flip Answer Its particles can move past each other Question Why does a substance in the solid state not flow? Tap to flip Answer Its particles vibrate in a fixed position Question What is between the particles of a substance in the gas state? Tap to flip Answer Nothing but empty space Question What is melting? Tap to flip Answer A change from the solid state to the liquid state Question What is freezing? Tap to flip Answer A change from the liquid state to the solid state Question What is boiling? Tap to flip Answer When a liquid turns into a gas throughout, forming bubbles Question What is condensing? Tap to flip Answer When a substance in the gas state is cooled and changes to the liquid state Question Does a substance gain or lose energy when it freezes? Tap to flip Answer It loses energy Question When a substance melts or boils, do its particles melt or boil? Tap to flip Answer No; the particles stay the same size and shape, as particles have no bulk properties like melting and boiling points Question What is sublimation? Tap to flip Answer A change of state directly from solid to gas, for example in iodine Question What is deposition? Tap to flip Answer A change from the gas state to the solid state without passing through the liquid state Question What conditions do sublimation and deposition occur at? Tap to flip Answer Specific conditions of temperature and pressure Question What is evaporation? Tap to flip Answer When a liquid changes to a gas at its surface, as particles gain enough energy to overcome the forces between them Question What is a physical change? Tap to flip Answer A change in which no new substances are formed, such as a change of state Question What is a chemical change? Tap to flip Answer A reaction in which the atoms or ions of the reactants are rearranged to make new substances Question Can a substance exist in more than one state of matter? Tap to flip Answer Yes; it can exist in any state, depending on the temperature Question What do forces of attraction between particles help determine during state changes? Tap to flip Answer The amount of energy needed for the state change Question In chemistry, what is a pure substance? Tap to flip Answer A single element or compound not mixed with any other substance Question What kind of melting and boiling points do pure elements and compounds have? Tap to flip Answer Specific (fixed) melting and boiling points Question What does a heating curve show? Tap to flip Answer How the temperature of a substance changes over time as it is heated Question What does a cooling curve show? Tap to flip Answer How the temperature of a substance changes over time as it is cooled Question Why does the temperature not change while a substance changes state? Tap to flip Answer The energy is needed to overcome the forces of attraction between particles Question How does a change of state of a pure substance appear on a heating or cooling curve? Tap to flip Answer As a horizontal line Question What can a heating curve be used to find? Tap to flip Answer The melting point of a substance Question What is the independent variable in an investigation? Tap to flip Answer The single variable that is changed Question What is the dependent variable in an investigation? Tap to flip Answer The single variable that is measured or observed Question What are control variables in an investigation? Tap to flip Answer All the variables other than the independent and dependent variables, which are kept the same Where this deck sits in the curriculum Curriculum National Curriculum for England Stage GCSE (Years 10–11) Course GCSE Chemistry Unit States of matter Exam boards AQA, Edexcel, OCR Tiers foundation and higher England's National Curriculum sets what is taught; the units and their order are Oak National Academy's. Flash Feed is not affiliated with Oak or any exam board.
How this deck was checked On 2026-11-02, every card was compared with its source: the lessons of Oak National Academy, a public body funded by England's Department for Education that publishes lessons for the national curriculum. Because the cards come from those lessons, no second source was sought. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
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A Chemistry lesson by Oak National Academy licensed under Open Government Licence (OGL)
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